Apparatus for rolling plates.



A. RIDD.

APPARATUS FOR ROLLING PLATES. APPLICATION mum 11119.1. 190s.

Witnesses Inventor W by Attorneys PATENTED SEPT. 25, 1906.

AMBROSE ItlDD, OF NEWPORT, KENTUCKY.

APPARATUS FOR ROLLING PLATES- Specification of Letters Patent.

rammed Sept. 25, 1906.

Application filed August 1. 1905. Serial No. 272,207.

To aZl whom it may concern.-

Be it known that I, AMBROSE Rim), a citizen of the United States,residing at Newport, in the county of Campbell and State of Kentucky,have invented a new and useful Apparatus for Rolling Plates, of whichthe fo lowing is a specification.

This invention relates to apparatus for manufacturing planished metalsheets, and has for its principal object to provide a mechanism for theproduction of that class of metal known as Russian sheet-iron.

A further object of the invention is to provide an improved apparatusfor finishing or planishing metal sheets having oxid-coated surfaces,the sheets being arranged. in packs and forced to slide one on the otherwhile the pack is held under pressure.

A further object of the invention is to provide'a rolling-mill in whichthe sheets to be treated are placed between comparatively heavy platesor platens, which are then assed between the rolls, so that the sheetsbeing treated do not actually come into contact with said rolls.

A still further object of the invention is to provide a rolling-mill inwhich a sheet or sheets to be treated may be placed between a pair ofplatens, said platens being provided with racks that are engaged bygears carried by or movin simultaneously wlth the rolls and preferab atthe same speed as said rolls.

A still furtlier object of the invention is to provide an apparatus ofthis class in which a pair of plate-holding platens are forced togetherto exercise the pressure 011 the plate or plates to be treated and thenare traveled in the same direction, but at different speeds.

With these and other objects in view, as will more fully hereinafterappear, the invention consists in certain novel features of constructionand arran ement of parts hereinafter fully described, illustrated in theaccompanying drawings, and particularly pointed out in the appendedclaims, it being understood thatvarious changes in the form,proportions, size, and minor details of the struc ture may be madewithout departing from the spirit or sacrificing any of the advantagesof the invention.

In the accompanying drawings, Figure 1 is an elevation, partly insection, of an apparatus constructed in accordance with the invention.Fig. 2 is a transverse sectional elevation of 'a portion of the same onthe line 2 2 of Fig. 1.

Similar numerals of reference are employed to indicate correspondingparts throughout both figures of the drawings.

In the manufacture of that class of metal known as Russian sheet-ironthe black plates from tight or loose rollin -mills are subjected toseveral processes, inc uding one or more passages through the rolls forthe purpose of reducing the gage of the sheets and the various processesfor producing the smooth finished surface, which is the principalcharacteristic of this class of metal.

During the course of many experiments I have found that if a number ofsheets coated. with oXid deposited either naturally or artificially onthe surface of the sheets are placed together in a pack and subjected tosliding friction one on the other while the pack is held under pressurethe oxid will be condcnsed and a smooth glazed surface will be produced,the sheets being practically rustproof. The mechanism forming thesubject of the present invention is designed for carrying this processinto effect.

In the drawings, 10 indicates the housings of a pair of rolls 11 12,which may be of any suitable dimensions, and the journals of these rollsare connected at both ends by gears 13 14 of unequal diameter, so thatthe rolls, being of equal diameter, will have unequal surface speeds.Secured to the journal of each roll is a pair of gears 15, said gearsbeing preferably provided with comparatively long teeth in order topermit adjustment of the relative positions of the rolls.

The oxid-coated sheets as, previously pre ared by rolling and annealing,are place etwecn two heavy platens 16 and 17, which are of a lengthequal at least to the length of the sheets and are of a width greaterthan the width of the active surface of the rolls. Near the outer edgeof each of the platens is arack 18, with which the gears 15 intermesh,and as the rolls are revolved the gears will insure positive movement ofthe platens, one of said platens traveling at greater speed than theother, but both moving in the same direction, and this movement is 1111arted to the sheets between the platens, so t hat said sheets will beforced to slide one on the other in frictional contact while heldtogether under any desired pressure. The inner faces of the platens arereferably slightly rou hened in order that t ey may tightly grip t 1eoutermost sheets of the pack, the u permost sheets forming smoothlinings for t e platens, this being principally for the pur ose ofeconomizing in the production of the platens and in order to save theexpense of producing the highly-finished surface of the platens whichwould otherwise be necessary.

In carrying out the invention the platens are heated. to any desiredtemperature, and while this temperature may vary for different classesof metal it is preferred tomaintain the platens at about a dark cherryred. The oxid-coated sheets are then placed between these platens, and,as before noted, the oxid may be formed naturally durin the severalheating processes through whic the sheets g0 and by exposing the same tothe air, or the production of the oxid may be promoted by artificialmeans, or a previously-prepared ferric oxid in owdered form may bemechanically a plied to said sheets. These oxidcoated s eets are placedbetween the latens, and the latter are then run through the rolls, andas one roll has a greater surface s eed than the other one of theplatens wil be moved faster than the other, and this movement will beimparted successively to the sheets which form the aek, so that saidsheets will be forced to sIide frictionally one on the other, and thesmooth highly-finished surface found in Russian sheet-iron will beproduced.

Having thus described the invention, what is claimed is- 1. In apparatusof the class described, a

air of platens between which the sheets to e treated are placed, andmeans for holding said platens under pressure and for moving the same inthe same direction and at differ ent speeds, respectively.

2. In apparatus of the class described, a pair of rol oppositedirections and at different surface speeds, respectivel and a pair ofsheet-confining platens wit which the rolls engage, and means forpositively feeding the platens between said rolls at a speed determinedby the speed of the rolls.

3. In a paratus of the class described, the combination with a pair ofrolls revolving in opposite directions and at different surface eeds,respectively, a pair of sheet-confining p latens movable between therollers and havmg racks, and gears rotating with the rolls andintermeshing with the racks.

4. In a paratus of the class described, a pair of rolls, means forrevolving the rolls in opposite directions and at different surface seeds, respectively, a pair of platens mova le between the rolls, saidplatens having roughened surfaces for engagement with the outermostsheets of the pack, and means for positively 'feedin said platensbetween the rolls at the spec s, respectively, of the saidroll-surfaces.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in the presence of two witnesses.

AMBROSE RIDD. Witnesses J. H. JooHUM, Jr., J. M. WALKER.

8, means for revolving said rolls in

